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Finding the Fourth Proportional to 18,539.84, 27,815.93 and 12,324.30

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Solution

The fourth proportional to 18,539.84, 27,815.93 and 12,324.30 is: 18,490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.84 : 27,815.93 = 12,324.30 : x
  2. Step 2: Convert to fraction form
    18,539.84/27,815.93 = 12,324.30/x
  3. Step 3: Cross multiply
    18,539.84x = 27,815.93 × 12,324.30
  4. Step 4: Simplify right side
    18,539.84x = 342,811,804.48
  5. Step 5: Solve for x
    x = 342,811,804.48/18,539.84
  6. Step 6: Final answer
    x = 18,490.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.